If the issue is acidity, then alkaline pH will show in the plant's complete discomfort and a lack of all elements. The plant will be pale and twisted, will suffer from necrosis and dying, and as a result, it will perish! I recommend using a digital pH meter to determine acidity. You'll get tired of struggling with strips. The price for a digital one is ($10), but I recommend calibrating the device every time before mixing the solution! 👌😇👍 Good luck, bro!